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Handle pwd protected keystores in all CLI tools (elastic#45289)
This change ensures that `elasticsearch-setup-passwords` and `elasticsearch-saml-metadata` can handle a password protected elasticsearch.keystore. For setup passwords the user would be prompted to add the elasticsearch keystore password upon running the tool. There is no option to pass the password as a parameter as we assume the user is present in order to enter the desired passwords for the built-in users. For saml-metadata, we prompt for the keystore password at all times even though we'd only need to read something from the keystore when there is a signing or encryption configuration.
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server/src/main/java/org/elasticsearch/cli/KeyStoreAwareCommand.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch licenses this file to you under | ||
| * the Apache License, Version 2.0 (the "License"); you may | ||
| * not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
|
|
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| package org.elasticsearch.cli; | ||
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| import joptsimple.OptionSet; | ||
| import org.elasticsearch.common.settings.KeyStoreWrapper; | ||
| import org.elasticsearch.common.settings.SecureString; | ||
| import org.elasticsearch.env.Environment; | ||
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| import javax.crypto.AEADBadTagException; | ||
| import java.io.IOException; | ||
| import java.security.GeneralSecurityException; | ||
| import java.util.Arrays; | ||
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| /** | ||
| * An {@link org.elasticsearch.cli.EnvironmentAwareCommand} that needs to access the elasticsearch keystore, possibly | ||
| * decrypting it if it is password protected. | ||
| */ | ||
| public abstract class KeyStoreAwareCommand extends EnvironmentAwareCommand { | ||
| public KeyStoreAwareCommand(String description) { | ||
| super(description); | ||
| } | ||
|
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| /** | ||
| * Reads the keystore password from the {@link Terminal}, prompting for verification where applicable and returns it as a | ||
| * {@link SecureString}. | ||
| * | ||
| * @param terminal the terminal to use for user inputs | ||
| * @param withVerification whether the user should be prompted for password verification | ||
| * @return a SecureString with the password the user entered | ||
| * @throws UserException If the user is prompted for verification and enters a different password | ||
| */ | ||
| protected static SecureString readPassword(Terminal terminal, boolean withVerification) throws UserException { | ||
| final char[] passwordArray; | ||
| if (withVerification) { | ||
| passwordArray = terminal.readSecret("Enter new password for the elasticsearch keystore (empty for no password): "); | ||
| char[] passwordVerification = terminal.readSecret("Enter same password again: "); | ||
| if (Arrays.equals(passwordArray, passwordVerification) == false) { | ||
| throw new UserException(ExitCodes.DATA_ERROR, "Passwords are not equal, exiting."); | ||
| } | ||
| Arrays.fill(passwordVerification, '\u0000'); | ||
| } else { | ||
| passwordArray = terminal.readSecret("Enter password for the elasticsearch keystore : "); | ||
| } | ||
| return new SecureString(passwordArray); | ||
| } | ||
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| /** | ||
| * Decrypt the {@code keyStore}, prompting the user to enter the password in the {@link Terminal} if it is password protected | ||
| */ | ||
| protected static void decryptKeyStore(KeyStoreWrapper keyStore, Terminal terminal) | ||
| throws UserException, GeneralSecurityException, IOException { | ||
| try (SecureString keystorePassword = keyStore.hasPassword() ? | ||
| readPassword(terminal, false) : new SecureString(new char[0])) { | ||
| keyStore.decrypt(keystorePassword.getChars()); | ||
| } catch (SecurityException e) { | ||
| if (e.getCause() instanceof AEADBadTagException) { | ||
| throw new UserException(ExitCodes.DATA_ERROR, "Wrong password for elasticsearch.keystore"); | ||
| } | ||
| } | ||
| } | ||
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| protected abstract void execute(Terminal terminal, OptionSet options, Environment env) throws Exception; | ||
| } |
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